251003020

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1\times {\mathrm{1187}}^1$

素因数の和:1402

約数の個数: 48

約数和(自身を含む): 537878880

約数和(自身を除く): 286875860

約数列:

[1, 2, 4, 5, 10, 20, 97, 109, 194, 218, 388, 436, 485, 545, 970, 1090, 1187, 1940, 2180, 2374, 4748, 5935, 10573, 11870, 21146, 23740, 42292, 52865, 105730, 115139, 129383, 211460, 230278, 258766, 460556, 517532, 575695, 646915, 1151390, 1293830, 2302780, 2587660, 12550151, 25100302, 50200604, 62750755, 125501510, 251003020]

約数ペア:

[(1, 251003020), (2, 125501510), (4, 62750755), (5, 50200604), (10, 25100302), (20, 12550151), (97, 2587660), (109, 2302780), (194, 1293830), (218, 1151390), (388, 646915), (436, 575695), (485, 517532), (545, 460556), (970, 258766), (1090, 230278), (1187, 211460), (1940, 129383), (2180, 115139), (2374, 105730), (4748, 52865), (5935, 42292), (10573, 23740), (11870, 21146)]